if_smsc.c revision 1.22.2.19
1 /* $NetBSD: if_smsc.c,v 1.22.2.19 2017/01/31 08:30:38 skrll Exp $ */ 2 3 /* $OpenBSD: if_smsc.c,v 1.4 2012/09/27 12:38:11 jsg Exp $ */ 4 /* $FreeBSD: src/sys/dev/usb/net/if_smsc.c,v 1.1 2012/08/15 04:03:55 gonzo Exp $ */ 5 /*- 6 * Copyright (c) 2012 7 * Ben Gray <bgray (at) freebsd.org>. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * SMSC LAN9xxx devices (http://www.smsc.com/) 33 * 34 * The LAN9500 & LAN9500A devices are stand-alone USB to Ethernet chips that 35 * support USB 2.0 and 10/100 Mbps Ethernet. 36 * 37 * The LAN951x devices are an integrated USB hub and USB to Ethernet adapter. 38 * The driver only covers the Ethernet part, the standard USB hub driver 39 * supports the hub part. 40 * 41 * This driver is closely modelled on the Linux driver written and copyrighted 42 * by SMSC. 43 * 44 * H/W TCP & UDP Checksum Offloading 45 * --------------------------------- 46 * The chip supports both tx and rx offloading of UDP & TCP checksums, this 47 * feature can be dynamically enabled/disabled. 48 * 49 * RX checksuming is performed across bytes after the IPv4 header to the end of 50 * the Ethernet frame, this means if the frame is padded with non-zero values 51 * the H/W checksum will be incorrect, however the rx code compensates for this. 52 * 53 * TX checksuming is more complicated, the device requires a special header to 54 * be prefixed onto the start of the frame which indicates the start and end 55 * positions of the UDP or TCP frame. This requires the driver to manually 56 * go through the packet data and decode the headers prior to sending. 57 * On Linux they generally provide cues to the location of the csum and the 58 * area to calculate it over, on FreeBSD we seem to have to do it all ourselves, 59 * hence this is not as optimal and therefore h/w TX checksum is currently not 60 * implemented. 61 */ 62 63 #ifdef _KERNEL_OPT 64 #include "opt_usb.h" 65 #include "opt_inet.h" 66 #endif 67 68 #include <sys/param.h> 69 #include <sys/bus.h> 70 #include <sys/device.h> 71 #include <sys/kernel.h> 72 #include <sys/mbuf.h> 73 #include <sys/mutex.h> 74 #include <sys/proc.h> 75 #include <sys/rndsource.h> 76 #include <sys/socket.h> 77 #include <sys/sockio.h> 78 #include <sys/systm.h> 79 80 #include <net/if.h> 81 #include <net/if_dl.h> 82 #include <net/if_media.h> 83 #include <net/if_ether.h> 84 85 #include <net/bpf.h> 86 87 #ifdef INET 88 #include <netinet/in.h> 89 #include <netinet/if_inarp.h> 90 #endif 91 92 #include <dev/mii/mii.h> 93 #include <dev/mii/miivar.h> 94 95 #include <dev/usb/usb.h> 96 #include <dev/usb/usbdi.h> 97 #include <dev/usb/usbdi_util.h> 98 #include <dev/usb/usbdivar.h> 99 #include <dev/usb/usbdevs.h> 100 101 #include <dev/usb/if_smscreg.h> 102 #include <dev/usb/if_smscvar.h> 103 104 #include "ioconf.h" 105 106 #ifdef USB_DEBUG 107 int smsc_debug = 0; 108 #endif 109 110 #define ETHER_ALIGN 2 111 /* 112 * Various supported device vendors/products. 113 */ 114 static const struct usb_devno smsc_devs[] = { 115 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN89530 }, 116 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9530 }, 117 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9730 }, 118 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500 }, 119 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A }, 120 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_ALT }, 121 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_HAL }, 122 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_SAL10 }, 123 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_ALT }, 124 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_SAL10 }, 125 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505 }, 126 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A }, 127 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_HAL }, 128 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_SAL10 }, 129 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505_SAL10 }, 130 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14 }, 131 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_ALT }, 132 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_SAL10 } 133 }; 134 135 #ifdef USB_DEBUG 136 #define smsc_dbg_printf(sc, fmt, args...) \ 137 do { \ 138 if (smsc_debug > 0) \ 139 printf("debug: " fmt, ##args); \ 140 } while(0) 141 #else 142 #define smsc_dbg_printf(sc, fmt, args...) 143 #endif 144 145 #define smsc_warn_printf(sc, fmt, args...) \ 146 printf("%s: warning: " fmt, device_xname((sc)->sc_dev), ##args) 147 148 #define smsc_err_printf(sc, fmt, args...) \ 149 printf("%s: error: " fmt, device_xname((sc)->sc_dev), ##args) 150 151 /* Function declarations */ 152 int smsc_chip_init(struct smsc_softc *); 153 void smsc_setmulti(struct smsc_softc *); 154 int smsc_setmacaddress(struct smsc_softc *, const uint8_t *); 155 156 int smsc_match(device_t, cfdata_t, void *); 157 void smsc_attach(device_t, device_t, void *); 158 int smsc_detach(device_t, int); 159 int smsc_activate(device_t, enum devact); 160 161 int smsc_init(struct ifnet *); 162 int smsc_init_locked(struct ifnet *); 163 void smsc_start(struct ifnet *); 164 void smsc_start_locked(struct ifnet *); 165 int smsc_ioctl(struct ifnet *, u_long, void *); 166 void smsc_stop(struct ifnet *, int); 167 void smsc_stop_locked(struct ifnet *, int); 168 169 void smsc_reset(struct smsc_softc *); 170 struct mbuf *smsc_newbuf(void); 171 172 void smsc_tick(void *); 173 void smsc_tick_task(void *); 174 void smsc_miibus_statchg(struct ifnet *); 175 int smsc_miibus_readreg(device_t, int, int); 176 void smsc_miibus_writereg(device_t, int, int, int); 177 int smsc_ifmedia_upd(struct ifnet *); 178 void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 179 void smsc_lock_mii(struct smsc_softc *); 180 void smsc_unlock_mii(struct smsc_softc *); 181 182 int smsc_tx_list_init(struct smsc_softc *); 183 void smsc_tx_list_free(struct smsc_softc *); 184 int smsc_rx_list_init(struct smsc_softc *); 185 void smsc_rx_list_free(struct smsc_softc *); 186 int smsc_encap(struct smsc_softc *, struct mbuf *, int); 187 void smsc_rxeof(struct usbd_xfer *, void *, usbd_status); 188 void smsc_txeof(struct usbd_xfer *, void *, usbd_status); 189 190 int smsc_read_reg(struct smsc_softc *, uint32_t, uint32_t *); 191 int smsc_write_reg(struct smsc_softc *, uint32_t, uint32_t); 192 int smsc_wait_for_bits(struct smsc_softc *, uint32_t, uint32_t); 193 int smsc_sethwcsum(struct smsc_softc *); 194 195 CFATTACH_DECL_NEW(usmsc, sizeof(struct smsc_softc), smsc_match, smsc_attach, 196 smsc_detach, smsc_activate); 197 198 int 199 smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 200 { 201 usb_device_request_t req; 202 uint32_t buf; 203 usbd_status err; 204 205 req.bmRequestType = UT_READ_VENDOR_DEVICE; 206 req.bRequest = SMSC_UR_READ_REG; 207 USETW(req.wValue, 0); 208 USETW(req.wIndex, off); 209 USETW(req.wLength, 4); 210 211 err = usbd_do_request(sc->sc_udev, &req, &buf); 212 if (err != 0) 213 smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 214 215 *data = le32toh(buf); 216 217 return err; 218 } 219 220 int 221 smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 222 { 223 usb_device_request_t req; 224 uint32_t buf; 225 usbd_status err; 226 227 buf = htole32(data); 228 229 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 230 req.bRequest = SMSC_UR_WRITE_REG; 231 USETW(req.wValue, 0); 232 USETW(req.wIndex, off); 233 USETW(req.wLength, 4); 234 235 err = usbd_do_request(sc->sc_udev, &req, &buf); 236 if (err != 0) 237 smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 238 239 return err; 240 } 241 242 int 243 smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 244 { 245 uint32_t val; 246 int err, i; 247 248 for (i = 0; i < 100; i++) { 249 if ((err = smsc_read_reg(sc, reg, &val)) != 0) 250 return err; 251 if (!(val & bits)) 252 return 0; 253 DELAY(5); 254 } 255 256 return 1; 257 } 258 259 int 260 smsc_miibus_readreg(device_t dev, int phy, int reg) 261 { 262 struct smsc_softc *sc = device_private(dev); 263 uint32_t addr; 264 uint32_t val = 0; 265 266 smsc_lock_mii(sc); 267 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 268 smsc_warn_printf(sc, "MII is busy\n"); 269 goto done; 270 } 271 272 addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 273 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 274 275 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 276 smsc_warn_printf(sc, "MII read timeout\n"); 277 278 smsc_read_reg(sc, SMSC_MII_DATA, &val); 279 280 done: 281 smsc_unlock_mii(sc); 282 283 return val & 0xFFFF; 284 } 285 286 void 287 smsc_miibus_writereg(device_t dev, int phy, int reg, int val) 288 { 289 struct smsc_softc *sc = device_private(dev); 290 uint32_t addr; 291 292 if (sc->sc_phyno != phy) 293 return; 294 295 smsc_lock_mii(sc); 296 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 297 smsc_warn_printf(sc, "MII is busy\n"); 298 smsc_unlock_mii(sc); 299 return; 300 } 301 302 smsc_write_reg(sc, SMSC_MII_DATA, val); 303 304 addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 305 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 306 smsc_unlock_mii(sc); 307 308 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 309 smsc_warn_printf(sc, "MII write timeout\n"); 310 } 311 312 void 313 smsc_miibus_statchg(struct ifnet *ifp) 314 { 315 struct smsc_softc *sc = ifp->if_softc; 316 struct mii_data *mii = &sc->sc_mii; 317 int err; 318 uint32_t flow; 319 uint32_t afc_cfg; 320 321 if (mii == NULL || ifp == NULL || 322 (ifp->if_flags & IFF_RUNNING) == 0) 323 return; 324 325 /* Use the MII status to determine link status */ 326 sc->sc_flags &= ~SMSC_FLAG_LINK; 327 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 328 (IFM_ACTIVE | IFM_AVALID)) { 329 switch (IFM_SUBTYPE(mii->mii_media_active)) { 330 case IFM_10_T: 331 case IFM_100_TX: 332 sc->sc_flags |= SMSC_FLAG_LINK; 333 break; 334 case IFM_1000_T: 335 /* Gigabit ethernet not supported by chipset */ 336 break; 337 default: 338 break; 339 } 340 } 341 342 /* Lost link, do nothing. */ 343 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 344 smsc_dbg_printf(sc, "link flag not set\n"); 345 return; 346 } 347 348 err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 349 if (err) { 350 smsc_warn_printf(sc, "failed to read initial AFC_CFG, " 351 "error %d\n", err); 352 return; 353 } 354 355 /* Enable/disable full duplex operation and TX/RX pause */ 356 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 357 smsc_dbg_printf(sc, "full duplex operation\n"); 358 sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 359 sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 360 361 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 362 flow = 0xffff0002; 363 else 364 flow = 0; 365 366 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 367 afc_cfg |= 0xf; 368 else 369 afc_cfg &= ~0xf; 370 371 } else { 372 smsc_dbg_printf(sc, "half duplex operation\n"); 373 sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 374 sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 375 376 flow = 0; 377 afc_cfg |= 0xf; 378 } 379 380 err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 381 err += smsc_write_reg(sc, SMSC_FLOW, flow); 382 err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 383 if (err) 384 smsc_warn_printf(sc, "media change failed, error %d\n", err); 385 } 386 387 int 388 smsc_ifmedia_upd(struct ifnet *ifp) 389 { 390 struct smsc_softc *sc = ifp->if_softc; 391 struct mii_data *mii = &sc->sc_mii; 392 int err; 393 394 if (mii->mii_instance) { 395 struct mii_softc *miisc; 396 397 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 398 mii_phy_reset(miisc); 399 } 400 err = mii_mediachg(mii); 401 return err; 402 } 403 404 void 405 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 406 { 407 struct smsc_softc *sc = ifp->if_softc; 408 struct mii_data *mii = &sc->sc_mii; 409 410 mii_pollstat(mii); 411 412 ifmr->ifm_active = mii->mii_media_active; 413 ifmr->ifm_status = mii->mii_media_status; 414 } 415 416 static inline uint32_t 417 smsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 418 { 419 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 420 } 421 422 void 423 smsc_setmulti(struct smsc_softc *sc) 424 { 425 struct ifnet *ifp = &sc->sc_ec.ec_if; 426 struct ether_multi *enm; 427 struct ether_multistep step; 428 uint32_t hashtbl[2] = { 0, 0 }; 429 uint32_t hash; 430 431 if (sc->sc_dying) 432 return; 433 434 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 435 allmulti: 436 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 437 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 438 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 439 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 440 return; 441 } else { 442 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 443 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 444 } 445 446 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 447 while (enm != NULL) { 448 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 449 ETHER_ADDR_LEN) != 0) 450 goto allmulti; 451 452 hash = smsc_hash(enm->enm_addrlo); 453 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 454 ETHER_NEXT_MULTI(step, enm); 455 } 456 457 /* Debug */ 458 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 459 smsc_dbg_printf(sc, "receive select group of macs\n"); 460 } else { 461 smsc_dbg_printf(sc, "receive own packets only\n"); 462 } 463 464 /* Write the hash table and mac control registers */ 465 ifp->if_flags &= ~IFF_ALLMULTI; 466 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 467 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 468 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 469 } 470 471 int 472 smsc_sethwcsum(struct smsc_softc *sc) 473 { 474 struct ifnet *ifp = &sc->sc_ec.ec_if; 475 uint32_t val; 476 int err; 477 478 if (!ifp) 479 return EIO; 480 481 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 482 if (err != 0) { 483 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 484 err); 485 return err; 486 } 487 488 /* Enable/disable the Rx checksum */ 489 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 490 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 491 else 492 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 493 494 /* Enable/disable the Tx checksum (currently not supported) */ 495 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 496 val |= SMSC_COE_CTRL_TX_EN; 497 else 498 val &= ~SMSC_COE_CTRL_TX_EN; 499 500 sc->sc_coe_ctrl = val; 501 502 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 503 if (err != 0) { 504 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 505 err); 506 return err; 507 } 508 509 return 0; 510 } 511 512 int 513 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 514 { 515 int err; 516 uint32_t val; 517 518 smsc_dbg_printf(sc, "setting mac address to " 519 "%02x:%02x:%02x:%02x:%02x:%02x\n", 520 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 521 522 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 523 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 524 goto done; 525 526 val = (addr[5] << 8) | addr[4]; 527 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 528 529 done: 530 return err; 531 } 532 533 void 534 smsc_reset(struct smsc_softc *sc) 535 { 536 if (sc->sc_dying) 537 return; 538 539 /* Wait a little while for the chip to get its brains in order. */ 540 DELAY(1000); 541 542 /* Reinitialize controller to achieve full reset. */ 543 smsc_chip_init(sc); 544 } 545 546 int 547 smsc_init(struct ifnet *ifp) 548 { 549 struct smsc_softc *sc = ifp->if_softc; 550 551 mutex_enter(&sc->sc_lock); 552 int ret = smsc_init_locked(ifp); 553 mutex_exit(&sc->sc_lock); 554 555 return ret; 556 } 557 558 int 559 smsc_init_locked(struct ifnet *ifp) 560 { 561 struct smsc_softc * const sc = ifp->if_softc; 562 usbd_status err; 563 564 if (sc->sc_dying) 565 return EIO; 566 567 /* Cancel pending I/O */ 568 smsc_stop_locked(ifp, 1); 569 570 /* Reset the ethernet interface. */ 571 smsc_reset(sc); 572 573 /* Load the multicast filter. */ 574 smsc_setmulti(sc); 575 576 /* TCP/UDP checksum offload engines. */ 577 smsc_sethwcsum(sc); 578 579 /* Open RX and TX pipes. */ 580 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 581 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_RX]); 582 if (err) { 583 printf("%s: open rx pipe failed: %s\n", 584 device_xname(sc->sc_dev), usbd_errstr(err)); 585 goto fail; 586 } 587 588 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 589 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_TX]); 590 if (err) { 591 printf("%s: open tx pipe failed: %s\n", 592 device_xname(sc->sc_dev), usbd_errstr(err)); 593 goto fail1; 594 } 595 596 /* Init RX ring. */ 597 if (smsc_rx_list_init(sc)) { 598 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 599 goto fail2; 600 } 601 602 /* Init TX ring. */ 603 if (smsc_tx_list_init(sc)) { 604 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 605 goto fail3; 606 } 607 608 /* Start up the receive pipe. */ 609 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 610 struct smsc_chain *c = &sc->sc_cdata.rx_chain[i]; 611 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 612 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 613 usbd_transfer(c->sc_xfer); 614 } 615 616 sc->sc_stopping = false; 617 618 /* Indicate we are up and running. */ 619 ifp->if_flags |= IFF_RUNNING; 620 ifp->if_flags &= ~IFF_OACTIVE; 621 622 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 623 624 return 0; 625 626 fail3: 627 smsc_rx_list_free(sc); 628 fail2: 629 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 630 fail1: 631 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 632 fail: 633 return EIO; 634 } 635 636 void 637 smsc_start(struct ifnet *ifp) 638 { 639 struct smsc_softc * const sc = ifp->if_softc; 640 KASSERT(ifp->if_extflags & IFEF_START_MPSAFE); 641 642 mutex_enter(&sc->sc_txlock); 643 if (!sc->sc_stopping) 644 smsc_start_locked(ifp); 645 mutex_exit(&sc->sc_txlock); 646 } 647 648 void 649 smsc_start_locked(struct ifnet *ifp) 650 { 651 struct smsc_softc * const sc = ifp->if_softc; 652 struct mbuf *m_head = NULL; 653 654 KASSERT(mutex_owned(&sc->sc_txlock)); 655 656 /* Don't send anything if there is no link or controller is busy. */ 657 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 658 return; 659 } 660 661 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 662 return; 663 664 IFQ_POLL(&ifp->if_snd, m_head); 665 if (m_head == NULL) 666 return; 667 668 if (smsc_encap(sc, m_head, 0)) { 669 return; 670 } 671 IFQ_DEQUEUE(&ifp->if_snd, m_head); 672 673 bpf_mtap(ifp, m_head); 674 675 ifp->if_flags |= IFF_OACTIVE; 676 677 /* 678 * Set a timeout in case the chip goes out to lunch. 679 */ 680 ifp->if_timer = 5; 681 } 682 683 void 684 smsc_tick(void *xsc) 685 { 686 struct smsc_softc *sc = xsc; 687 688 if (sc == NULL) 689 return; 690 691 if (sc->sc_dying) 692 return; 693 694 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 695 } 696 697 void 698 smsc_stop(struct ifnet *ifp, int disable) 699 { 700 struct smsc_softc * const sc = ifp->if_softc; 701 702 mutex_enter(&sc->sc_lock); 703 smsc_stop_locked(ifp, disable); 704 mutex_exit(&sc->sc_lock); 705 } 706 707 void 708 smsc_stop_locked(struct ifnet *ifp, int disable) 709 { 710 struct smsc_softc * const sc = ifp->if_softc; 711 usbd_status err; 712 713 // smsc_reset(sc); 714 715 KASSERT(mutex_owned(&sc->sc_lock)); 716 mutex_enter(&sc->sc_rxlock); 717 mutex_enter(&sc->sc_txlock); 718 sc->sc_stopping = true; 719 mutex_exit(&sc->sc_txlock); 720 mutex_exit(&sc->sc_rxlock); 721 722 callout_stop(&sc->sc_stat_ch); 723 724 /* Stop transfers. */ 725 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 726 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 727 if (err) { 728 printf("%s: abort rx pipe failed: %s\n", 729 device_xname(sc->sc_dev), usbd_errstr(err)); 730 } 731 } 732 733 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 734 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 735 if (err) { 736 printf("%s: abort tx pipe failed: %s\n", 737 device_xname(sc->sc_dev), usbd_errstr(err)); 738 } 739 } 740 741 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 742 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 743 if (err) { 744 printf("%s: abort intr pipe failed: %s\n", 745 device_xname(sc->sc_dev), usbd_errstr(err)); 746 } 747 } 748 749 smsc_rx_list_free(sc); 750 751 smsc_tx_list_free(sc); 752 753 /* Close pipes */ 754 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 755 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 756 if (err) { 757 printf("%s: close rx pipe failed: %s\n", 758 device_xname(sc->sc_dev), usbd_errstr(err)); 759 } 760 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 761 } 762 763 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 764 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 765 if (err) { 766 printf("%s: close tx pipe failed: %s\n", 767 device_xname(sc->sc_dev), usbd_errstr(err)); 768 } 769 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 770 } 771 772 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 773 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 774 if (err) { 775 printf("%s: close intr pipe failed: %s\n", 776 device_xname(sc->sc_dev), usbd_errstr(err)); 777 } 778 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 779 } 780 781 ifp->if_timer = 0; 782 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 783 784 if (disable) { 785 /* drain */ 786 } 787 } 788 789 int 790 smsc_chip_init(struct smsc_softc *sc) 791 { 792 int err; 793 uint32_t reg_val; 794 int burst_cap; 795 796 /* Enter H/W config mode */ 797 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 798 799 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 800 SMSC_HW_CFG_LRST)) != 0) { 801 smsc_warn_printf(sc, "timed-out waiting for reset to " 802 "complete\n"); 803 goto init_failed; 804 } 805 806 /* Reset the PHY */ 807 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 808 809 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 810 SMSC_PM_CTRL_PHY_RST)) != 0) { 811 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 812 "complete\n"); 813 goto init_failed; 814 } 815 usbd_delay_ms(sc->sc_udev, 40); 816 817 /* Set the mac address */ 818 struct ifnet * const ifp = &sc->sc_ec.ec_if; 819 const char *eaddr = CLLADDR(ifp->if_sadl); 820 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 821 smsc_warn_printf(sc, "failed to set the MAC address\n"); 822 goto init_failed; 823 } 824 825 /* 826 * Don't know what the HW_CFG_BIR bit is, but following the reset 827 * sequence as used in the Linux driver. 828 */ 829 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 830 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 831 goto init_failed; 832 } 833 reg_val |= SMSC_HW_CFG_BIR; 834 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 835 836 /* 837 * There is a so called 'turbo mode' that the linux driver supports, it 838 * seems to allow you to jam multiple frames per Rx transaction. 839 * By default this driver supports that and therefore allows multiple 840 * frames per USB transfer. 841 * 842 * The xfer buffer size needs to reflect this as well, therefore based 843 * on the calculations in the Linux driver the RX bufsize is set to 844 * 18944, 845 * bufsz = (16 * 1024 + 5 * 512) 846 * 847 * Burst capability is the number of URBs that can be in a burst of 848 * data/ethernet frames. 849 */ 850 851 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 852 burst_cap = 37; 853 else 854 burst_cap = 128; 855 856 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 857 858 /* Set the default bulk in delay (magic value from Linux driver) */ 859 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 860 861 /* 862 * Initialise the RX interface 863 */ 864 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 865 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 866 err); 867 goto init_failed; 868 } 869 870 /* 871 * The following settings are used for 'turbo mode', a.k.a multiple 872 * frames per Rx transaction (again info taken form Linux driver). 873 */ 874 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 875 876 /* 877 * set Rx data offset to ETHER_ALIGN which will make the IP header 878 * align on a word boundary. 879 */ 880 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 881 882 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 883 884 /* Clear the status register ? */ 885 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 886 887 /* Read and display the revision register */ 888 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 889 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 890 goto init_failed; 891 } 892 893 /* GPIO/LED setup */ 894 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 895 SMSC_LED_GPIO_CFG_FDX_LED; 896 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 897 898 /* 899 * Initialise the TX interface 900 */ 901 smsc_write_reg(sc, SMSC_FLOW, 0); 902 903 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 904 905 /* Read the current MAC configuration */ 906 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 907 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 908 goto init_failed; 909 } 910 911 /* disable pad stripping, collides with checksum offload */ 912 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 913 914 /* Vlan */ 915 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 916 917 /* 918 * Start TX 919 */ 920 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 921 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 922 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 923 924 /* 925 * Start RX 926 */ 927 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 928 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 929 930 return 0; 931 932 init_failed: 933 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 934 return err; 935 } 936 937 static int 938 smsc_ifflags_cb(struct ethercom *ec) 939 { 940 struct ifnet *ifp = &ec->ec_if; 941 struct smsc_softc *sc = ifp->if_softc; 942 int rc = 0; 943 944 mutex_enter(&sc->sc_lock); 945 946 int change = ifp->if_flags ^ sc->sc_if_flags; 947 sc->sc_if_flags = ifp->if_flags; 948 949 if ((change & ~(IFF_CANTCHANGE | IFF_DEBUG)) != 0) { 950 rc = ENETRESET; 951 goto out; 952 } 953 954 if ((change & IFF_PROMISC) != 0) { 955 if (ifp->if_flags & IFF_PROMISC) { 956 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 957 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 958 } else if (!(ifp->if_flags & IFF_PROMISC)) { 959 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 960 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 961 } 962 smsc_setmulti(sc); 963 } 964 965 out: 966 mutex_exit(&sc->sc_lock); 967 968 return rc; 969 } 970 971 972 int 973 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 974 { 975 struct smsc_softc *sc = ifp->if_softc; 976 // struct ifreq /*const*/ *ifr = data; 977 int s, error = 0; 978 979 if (sc->sc_dying) 980 return EIO; 981 982 s = splnet(); 983 error = ether_ioctl(ifp, cmd, data); 984 splx(s); 985 986 if (error == ENETRESET) { 987 error = 0; 988 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 989 ; 990 else if (ifp->if_flags & IFF_RUNNING) { 991 mutex_enter(&sc->sc_lock); 992 smsc_setmulti(sc); 993 mutex_exit(&sc->sc_lock); 994 } 995 } 996 return error; 997 } 998 999 int 1000 smsc_match(device_t parent, cfdata_t match, void *aux) 1001 { 1002 struct usb_attach_arg *uaa = aux; 1003 1004 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 1005 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 1006 } 1007 1008 void 1009 smsc_attach(device_t parent, device_t self, void *aux) 1010 { 1011 struct smsc_softc *sc = device_private(self); 1012 struct usb_attach_arg *uaa = aux; 1013 struct usbd_device *dev = uaa->uaa_device; 1014 usb_interface_descriptor_t *id; 1015 usb_endpoint_descriptor_t *ed; 1016 char *devinfop; 1017 struct mii_data *mii; 1018 struct ifnet *ifp; 1019 int err, i; 1020 uint32_t mac_h, mac_l; 1021 1022 sc->sc_dev = self; 1023 sc->sc_udev = dev; 1024 sc->sc_stopping = false; 1025 1026 aprint_naive("\n"); 1027 aprint_normal("\n"); 1028 1029 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1030 aprint_normal_dev(self, "%s\n", devinfop); 1031 usbd_devinfo_free(devinfop); 1032 1033 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1034 if (err) { 1035 aprint_error_dev(self, "failed to set configuration" 1036 ", err=%s\n", usbd_errstr(err)); 1037 return; 1038 } 1039 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1040 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1041 usb_init_task(&sc->sc_stop_task, (void (*)(void *))smsc_stop, sc, 0); 1042 1043 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1044 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1045 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1046 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1047 1048 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1049 if (err) { 1050 aprint_error_dev(self, "getting interface handle failed\n"); 1051 return; 1052 } 1053 1054 id = usbd_get_interface_descriptor(sc->sc_iface); 1055 1056 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1057 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1058 else 1059 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1060 1061 /* Find endpoints. */ 1062 for (i = 0; i < id->bNumEndpoints; i++) { 1063 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1064 if (!ed) { 1065 aprint_error_dev(self, "couldn't get ep %d\n", i); 1066 return; 1067 } 1068 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1069 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1070 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1071 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1072 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1073 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1074 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1075 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1076 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1077 } 1078 } 1079 1080 ifp = &sc->sc_ec.ec_if; 1081 ifp->if_softc = sc; 1082 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1083 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1084 ifp->if_extflags = IFEF_START_MPSAFE; 1085 ifp->if_init = smsc_init; 1086 ifp->if_ioctl = smsc_ioctl; 1087 ifp->if_start = smsc_start; 1088 ifp->if_stop = smsc_stop; 1089 1090 #ifdef notyet 1091 /* 1092 * We can do TCPv4, and UDPv4 checksums in hardware. 1093 */ 1094 ifp->if_capabilities |= 1095 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1096 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1097 #endif 1098 1099 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1100 1101 /* Setup some of the basics */ 1102 sc->sc_phyno = 1; 1103 1104 /* 1105 * Attempt to get the mac address, if an EEPROM is not attached this 1106 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1107 * address based on urandom. 1108 */ 1109 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1110 1111 prop_dictionary_t dict = device_properties(self); 1112 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1113 1114 if (eaprop != NULL) { 1115 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1116 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1117 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1118 ETHER_ADDR_LEN); 1119 } else 1120 /* Check if there is already a MAC address in the register */ 1121 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1122 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1123 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1124 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1125 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1126 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1127 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1128 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1129 } 1130 1131 aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); 1132 1133 IFQ_SET_READY(&ifp->if_snd); 1134 1135 /* Initialize MII/media info. */ 1136 mii = &sc->sc_mii; 1137 mii->mii_ifp = ifp; 1138 mii->mii_readreg = smsc_miibus_readreg; 1139 mii->mii_writereg = smsc_miibus_writereg; 1140 mii->mii_statchg = smsc_miibus_statchg; 1141 mii->mii_flags = MIIF_AUTOTSLEEP; 1142 sc->sc_ec.ec_mii = mii; 1143 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1144 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1145 1146 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1147 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1148 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1149 } else 1150 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1151 1152 if_initialize(ifp); 1153 sc->sc_ipq = if_percpuq_create(&sc->sc_ec.ec_if); 1154 ether_ifattach(ifp, sc->sc_enaddr); 1155 if_register(ifp); 1156 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1157 1158 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1159 RND_TYPE_NET, RND_FLAG_DEFAULT); 1160 1161 callout_init(&sc->sc_stat_ch, 0); 1162 1163 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1164 } 1165 1166 int 1167 smsc_detach(device_t self, int flags) 1168 { 1169 struct smsc_softc *sc = device_private(self); 1170 struct ifnet *ifp = &sc->sc_ec.ec_if; 1171 int s; 1172 1173 callout_stop(&sc->sc_stat_ch); 1174 1175 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1176 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1177 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1178 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1179 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1180 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1181 1182 /* 1183 * Remove any pending tasks. They cannot be executing because they run 1184 * in the same thread as detach. 1185 */ 1186 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1187 usb_rem_task(sc->sc_udev, &sc->sc_stop_task); 1188 1189 s = splusb(); 1190 1191 if (--sc->sc_refcnt >= 0) { 1192 /* Wait for processes to go away */ 1193 usb_detach_waitold(sc->sc_dev); 1194 } 1195 1196 if (ifp->if_flags & IFF_RUNNING) 1197 smsc_stop(ifp ,1); 1198 1199 rnd_detach_source(&sc->sc_rnd_source); 1200 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1201 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1202 if (ifp->if_softc != NULL) { 1203 ether_ifdetach(ifp); 1204 if_detach(ifp); 1205 } 1206 1207 #ifdef DIAGNOSTIC 1208 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1209 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1210 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1211 printf("%s: detach has active endpoints\n", 1212 device_xname(sc->sc_dev)); 1213 #endif 1214 1215 if (--sc->sc_refcnt >= 0) { 1216 /* Wait for processes to go away. */ 1217 usb_detach_waitold(sc->sc_dev); 1218 } 1219 splx(s); 1220 1221 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1222 1223 mutex_destroy(&sc->sc_mii_lock); 1224 1225 mutex_destroy(&sc->sc_rxlock); 1226 mutex_destroy(&sc->sc_txlock); 1227 mutex_destroy(&sc->sc_lock); 1228 1229 return 0; 1230 } 1231 1232 void 1233 smsc_tick_task(void *xsc) 1234 { 1235 int s; 1236 struct smsc_softc *sc = xsc; 1237 struct ifnet *ifp; 1238 struct mii_data *mii; 1239 1240 if (sc == NULL) 1241 return; 1242 1243 if (sc->sc_dying) 1244 return; 1245 ifp = &sc->sc_ec.ec_if; 1246 mii = &sc->sc_mii; 1247 if (mii == NULL) 1248 return; 1249 1250 s = splnet(); 1251 1252 mii_tick(mii); 1253 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1254 smsc_miibus_statchg(ifp); 1255 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1256 1257 splx(s); 1258 } 1259 1260 int 1261 smsc_activate(device_t self, enum devact act) 1262 { 1263 struct smsc_softc *sc = device_private(self); 1264 1265 switch (act) { 1266 case DVACT_DEACTIVATE: 1267 if_deactivate(&sc->sc_ec.ec_if); 1268 sc->sc_dying = 1; 1269 return 0; 1270 default: 1271 return EOPNOTSUPP; 1272 } 1273 return 0; 1274 } 1275 1276 void 1277 smsc_lock_mii(struct smsc_softc *sc) 1278 { 1279 sc->sc_refcnt++; 1280 mutex_enter(&sc->sc_mii_lock); 1281 } 1282 1283 void 1284 smsc_unlock_mii(struct smsc_softc *sc) 1285 { 1286 mutex_exit(&sc->sc_mii_lock); 1287 if (--sc->sc_refcnt < 0) 1288 usb_detach_wakeupold(sc->sc_dev); 1289 } 1290 1291 void 1292 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1293 { 1294 struct smsc_chain *c = (struct smsc_chain *)priv; 1295 struct smsc_softc *sc = c->sc_sc; 1296 struct ifnet *ifp = &sc->sc_ec.ec_if; 1297 u_char *buf = c->sc_buf; 1298 uint32_t total_len; 1299 uint32_t rxhdr; 1300 uint16_t pktlen; 1301 struct mbuf *m; 1302 1303 mutex_enter(&sc->sc_rxlock); 1304 1305 if (sc->sc_dying) { 1306 mutex_exit(&sc->sc_rxlock); 1307 return; 1308 } 1309 1310 if (!(ifp->if_flags & IFF_RUNNING)) { 1311 mutex_exit(&sc->sc_rxlock); 1312 return; 1313 } 1314 1315 if (status != USBD_NORMAL_COMPLETION) { 1316 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1317 mutex_exit(&sc->sc_rxlock); 1318 return; 1319 } 1320 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1321 printf("%s: usb errors on rx: %s\n", 1322 device_xname(sc->sc_dev), usbd_errstr(status)); 1323 } 1324 if (status == USBD_STALLED) 1325 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1326 goto done; 1327 } 1328 1329 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1330 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1331 1332 while (total_len != 0) { 1333 if (total_len < sizeof(rxhdr)) { 1334 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1335 total_len, sizeof(rxhdr)); 1336 ifp->if_ierrors++; 1337 goto done; 1338 } 1339 1340 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1341 rxhdr = le32toh(rxhdr); 1342 buf += sizeof(rxhdr); 1343 total_len -= sizeof(rxhdr); 1344 1345 if (rxhdr & SMSC_RX_STAT_COLLISION) 1346 ifp->if_collisions++; 1347 1348 if (rxhdr & (SMSC_RX_STAT_ERROR 1349 | SMSC_RX_STAT_LENGTH_ERROR 1350 | SMSC_RX_STAT_MII_ERROR)) { 1351 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1352 ifp->if_ierrors++; 1353 goto done; 1354 } 1355 1356 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1357 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1358 "0x%08x\n", total_len, pktlen, rxhdr); 1359 1360 if (pktlen < ETHER_HDR_LEN) { 1361 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1362 pktlen, ETHER_HDR_LEN); 1363 ifp->if_ierrors++; 1364 goto done; 1365 } 1366 1367 pktlen += ETHER_ALIGN; 1368 1369 if (pktlen > MCLBYTES) { 1370 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1371 pktlen, MCLBYTES); 1372 ifp->if_ierrors++; 1373 goto done; 1374 } 1375 1376 if (pktlen > total_len) { 1377 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1378 pktlen, total_len); 1379 ifp->if_ierrors++; 1380 goto done; 1381 } 1382 1383 m = smsc_newbuf(); 1384 if (m == NULL) { 1385 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1386 ifp->if_ierrors++; 1387 goto done; 1388 } 1389 1390 ifp->if_ipackets++; 1391 m_set_rcvif(m, ifp); 1392 m->m_pkthdr.len = m->m_len = pktlen; 1393 m->m_flags |= M_HASFCS; 1394 m_adj(m, ETHER_ALIGN); 1395 1396 KASSERT(m->m_len < MCLBYTES); 1397 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1398 1399 /* Check if RX TCP/UDP checksumming is being offloaded */ 1400 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1401 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1402 struct ether_header *eh; 1403 1404 eh = mtod(m, struct ether_header *); 1405 1406 /* Remove the extra 2 bytes of the csum */ 1407 m_adj(m, -2); 1408 1409 /* 1410 * The checksum appears to be simplistically calculated 1411 * over the udp/tcp header and data up to the end of the 1412 * eth frame. Which means if the eth frame is padded 1413 * the csum calculation is incorrectly performed over 1414 * the padding bytes as well. Therefore to be safe we 1415 * ignore the H/W csum on frames less than or equal to 1416 * 64 bytes. 1417 * 1418 * Ignore H/W csum for non-IPv4 packets. 1419 */ 1420 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1421 be16toh(eh->ether_type), pktlen); 1422 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1423 pktlen > ETHER_MIN_LEN) { 1424 1425 m->m_pkthdr.csum_flags |= 1426 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1427 1428 /* 1429 * Copy the TCP/UDP checksum from the last 2 1430 * bytes of the transfer and put in the 1431 * csum_data field. 1432 */ 1433 memcpy(&m->m_pkthdr.csum_data, 1434 buf + pktlen - 2, 2); 1435 /* 1436 * The data is copied in network order, but the 1437 * csum algorithm in the kernel expects it to be 1438 * in host network order. 1439 */ 1440 m->m_pkthdr.csum_data = 1441 ntohs(m->m_pkthdr.csum_data); 1442 smsc_dbg_printf(sc, 1443 "RX checksum offloaded (0x%04x)\n", 1444 m->m_pkthdr.csum_data); 1445 } 1446 } 1447 1448 /* round up to next longword */ 1449 pktlen = (pktlen + 3) & ~0x3; 1450 1451 /* total_len does not include the padding */ 1452 if (pktlen > total_len) 1453 pktlen = total_len; 1454 1455 buf += pktlen; 1456 total_len -= pktlen; 1457 1458 mutex_exit(&sc->sc_rxlock); 1459 1460 /* push the packet up */ 1461 bpf_mtap(ifp, m); 1462 if_percpuq_enqueue(sc->sc_ipq, m); 1463 1464 mutex_enter(&sc->sc_rxlock); 1465 } 1466 1467 done: 1468 mutex_exit(&sc->sc_rxlock); 1469 1470 /* Setup new transfer. */ 1471 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1472 USBD_NO_TIMEOUT, smsc_rxeof); 1473 usbd_transfer(xfer); 1474 1475 return; 1476 } 1477 1478 void 1479 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1480 { 1481 struct smsc_chain *c = priv; 1482 struct smsc_softc *sc = c->sc_sc; 1483 struct ifnet *ifp = &sc->sc_ec.ec_if; 1484 1485 mutex_enter(&sc->sc_txlock); 1486 1487 if (sc->sc_dying) { 1488 mutex_exit(&sc->sc_txlock); 1489 return; 1490 } 1491 1492 if (sc->sc_stopping) { 1493 mutex_exit(&sc->sc_txlock); 1494 return; 1495 } 1496 1497 ifp->if_timer = 0; 1498 ifp->if_flags &= ~IFF_OACTIVE; 1499 1500 if (status != USBD_NORMAL_COMPLETION) { 1501 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1502 mutex_exit(&sc->sc_txlock); 1503 return; 1504 } 1505 ifp->if_oerrors++; 1506 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1507 usbd_errstr(status)); 1508 if (status == USBD_STALLED) 1509 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1510 mutex_exit(&sc->sc_txlock); 1511 return; 1512 } 1513 ifp->if_opackets++; 1514 1515 m_freem(c->sc_mbuf); 1516 c->sc_mbuf = NULL; 1517 1518 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1519 smsc_start_locked(ifp); 1520 1521 mutex_exit(&sc->sc_txlock); 1522 } 1523 1524 int 1525 smsc_tx_list_init(struct smsc_softc *sc) 1526 { 1527 struct smsc_cdata *cd = &sc->sc_cdata; 1528 struct smsc_chain *c; 1529 int i; 1530 1531 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1532 c = &cd->tx_chain[i]; 1533 c->sc_sc = sc; 1534 c->sc_idx = i; 1535 c->sc_mbuf = NULL; 1536 if (c->sc_xfer == NULL) { 1537 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1538 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1539 &c->sc_xfer); 1540 if (error) 1541 return EIO; 1542 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1543 } 1544 } 1545 1546 return 0; 1547 } 1548 1549 void 1550 smsc_tx_list_free(struct smsc_softc *sc) 1551 { 1552 /* Free TX resources. */ 1553 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1554 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1555 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1556 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1557 } 1558 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1559 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1560 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1561 } 1562 } 1563 } 1564 1565 int 1566 smsc_rx_list_init(struct smsc_softc *sc) 1567 { 1568 struct smsc_cdata *cd = &sc->sc_cdata; 1569 struct smsc_chain *c; 1570 int i; 1571 1572 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1573 c = &cd->rx_chain[i]; 1574 c->sc_sc = sc; 1575 c->sc_idx = i; 1576 c->sc_mbuf = NULL; 1577 if (c->sc_xfer == NULL) { 1578 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1579 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1580 if (error) 1581 return error; 1582 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1583 } 1584 } 1585 1586 return 0; 1587 } 1588 1589 void 1590 smsc_rx_list_free(struct smsc_softc *sc) 1591 { 1592 /* Free RX resources. */ 1593 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1594 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1595 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1596 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1597 } 1598 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1599 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1600 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1601 } 1602 } 1603 } 1604 1605 struct mbuf * 1606 smsc_newbuf(void) 1607 { 1608 struct mbuf *m; 1609 1610 MGETHDR(m, M_DONTWAIT, MT_DATA); 1611 if (m == NULL) 1612 return NULL; 1613 1614 MCLGET(m, M_DONTWAIT); 1615 if (!(m->m_flags & M_EXT)) { 1616 m_freem(m); 1617 return NULL; 1618 } 1619 1620 return m; 1621 } 1622 1623 int 1624 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1625 { 1626 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1627 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1628 uint32_t txhdr; 1629 uint32_t frm_len = 0; 1630 1631 /* 1632 * Each frame is prefixed with two 32-bit values describing the 1633 * length of the packet and buffer. 1634 */ 1635 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1636 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1637 txhdr = htole32(txhdr); 1638 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1639 1640 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1641 txhdr = htole32(txhdr); 1642 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1643 1644 frm_len += 8; 1645 1646 /* Next copy in the actual packet */ 1647 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1648 frm_len += m->m_pkthdr.len; 1649 1650 c->sc_mbuf = m; 1651 1652 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1653 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1654 1655 usbd_status err = usbd_transfer(c->sc_xfer); 1656 /* XXXNH get task to stop interface */ 1657 if (err != USBD_IN_PROGRESS) { 1658 smsc_stop(ifp, 0); 1659 return EIO; 1660 } 1661 1662 sc->sc_cdata.tx_cnt++; 1663 1664 return 0; 1665 } 1666
Indexes created Thu Oct 02 01:09:59 GMT 2025